Add `section-folds.js'

3 files changed, 97 insertions, 0 deletions

diff --git a/haunt/pages/weblabels.sxml b/haunt/pages/weblabels.sxml
index 4aaa3a3..0c53551 100644
--- a/haunt/pages/weblabels.sxml
+++ b/haunt/pages/weblabels.sxml
@@ -30,6 +30,12 @@
                               `(p "GNU General Public License 3.0 or later")))
               (td ,(hyperlink "/static/js/webmention.js"
                               `(p "/static/js/webmention.js"))))
+          (tr (td ,(hyperlink "/static/js/section-folds.js"
+                              `(p "/static/js/section-folds.js")))
+              (td ,(hyperlink "http://www.gnu.org/licenses/gpl-3.0.html"
+                              `(p "GNU General Public License 3.0 or later")))
+              (td ,(hyperlink "/static/js/section-folds.js"
+                              `(p "/static/js/section-folds.js"))))
           (tr (td ,(hyperlink "/static/js/rsvp.js"
                               `(p "/static/js/rsvp.js")))
               (td ,(hyperlink "http://www.gnu.org/licenses/gpl-3.0.html"
diff --git a/haunt/static/css/style.css b/haunt/static/css/style.css
index 58db3a9..930ef02 100644
--- a/haunt/static/css/style.css
+++ b/haunt/static/css/style.css
@@ -308,8 +308,24 @@ button {
     background-color: #f6f5f4;
 }
 
+/* Folded sections. */
+.fold-hidden {
+    height: 45px;
+    overflow: hidden;
+    mask-image: linear-gradient(to bottom, black 0%, transparent 100%);
+}
+
 /* Styles specific to the "about" page. */
 
+.portrait {
+    max-width: 30%;
+    float: right;
+}
+
+.portrait > img {
+    max-width: 100%;
+}
+
 .project-section td:nth-child(1) {
     width: 15%;
 }
@@ -409,6 +425,14 @@ button {
   padding: 0.25em 1em 0.25em 7em;
 }
 
+.article-future-interjection {
+  background-image: url('/static/image/clock.png');
+  background-repeat: no-repeat;
+  background-size: 4em 4em;
+  background-position: 1.5em 50%;
+  padding: 0.25em 1em 0.25em 7em;
+}
+
 #loading {
     border: 1px solid;
     width: fit-content;
diff --git a/haunt/static/js/section-folds.js b/haunt/static/js/section-folds.js
new file mode 100644
index 0000000..ed6507e
--- /dev/null
+++ b/haunt/static/js/section-folds.js
@@ -0,0 +1,67 @@
+/*
+ * section-folds.js -- Parse out sections to hide behind an "unfold" dialog
+ * Copyright © 2022 Jakob L. Kreuze <zerodaysfordays@sdf.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+function handleFolds() {
+    function displayFold(fold, foldText, frontMatterText) {
+        foldText.innerHTML = `⬇️ ${frontMatterText}`;
+        fold.classList.remove("fold-hidden");
+        
+    }
+
+    function hideFold(fold, foldText, frontMatterText) {
+        foldText.innerHTML = `➡️ Folded ${frontMatterText}`;
+        fold.classList.add("fold-hidden");
+    }
+
+    let folds = document.querySelectorAll(".section-fold");
+
+    for (let fold of folds) {
+        // The first thing we'll do is generate the "front matter" for the fold, so
+        // that the reader knows what lies beneath the fold.
+        let frontMatterText = `Section on "${fold.dataset.name}"`;
+        let foldFrontMatter = document.createElement("div");
+
+        // The text will be inside of an anchor, which we'll hook onto using an
+        // event listener.
+        let foldAnchor = document.createElement("a");
+        foldAnchor.href = "#";
+        let foldText = document.createElement("p");
+        foldAnchor.appendChild(foldText);
+        fold.parentNode.insertBefore(foldAnchor, fold);
+
+        // The fold will start off in the "hidden" state.
+        let toggle = false;
+        hideFold(fold, foldText, frontMatterText);
+
+        // But clicking on the "front matter" will cause the state of the fold
+        // to toggle, first to "visible", and then back to "hidden".
+        foldAnchor.addEventListener('click', () => {
+            toggle = !toggle;
+            if (toggle) {
+                displayFold(fold, foldText, frontMatterText);
+            } else {
+                hideFold(fold, foldText, frontMatterText);
+            }
+        });
+    }
+
+}
+
+// Defer parsing all of the "folds" until the document has completely loaded.
+document.addEventListener("DOMContentLoaded", handleFolds);